Upon reduction to \(M^{1,3}\)  the relations on the first line are the only nontrivial anticommutation relations of \(\mathfrak {m}^{(1,3)|8}\)  (since then we set \([Q_{aA},Q_{bB}] = \left[\overline{Q}_{\dot{a}A},\overline{Q}_{\dot{b}B}\right] = 0\) ). However D. Olive and E. Witten [1]} discovered that, for the \(N=2\)  supersymmetric Yang–Mills on \(M^{1,3}\) , the super Lie algebra of Noether charges of the Lagrangian (which is of course symmetric under the action of \(\mathfrak {m}^{(1,3)|8}\) ) is a central extension of \(\mathfrak {m}^{(1,3)|8}\) , obtained by adding two central charges which correspond the the real and imaginary parts of \(Z_{AB}\) . The amazing point is that these charges have a topological interpretation in way similar to the example seen in §REF  and are related the possibility of having an electro-magnetic duality for supersymmetric non Abelian gauge theories conjectured in [2]}.
